Hi,

On our VM systems we run a product called VPARS.  This allows us to have
one base database that is static, and multiple read/write areas for each
test region.  When a test region updates a record, it is not written to
the base set, instead it is written to the users own update area.  This
allows for a consistent base, and one users test will not impact the data
integrity for another user.  The VPARS VM component intercepts the I/O,
and redirects it to the users R/W area.  If it is a read operation, it
checks in the users area, if it is not there, it then goes to the base.
You can also have multiple levels.

Is there similar software that we can run on our Linux images that would
work for I/O to an Oracle or DB2 database?

Thanks,

Ken Vance
Amadeus

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